Polarizer and display device

Abstract

The present application relates to the field of display technology, and in particular to a polarizer and a display device, which include a polarizing layer; a light regulating layer, which is arranged on one side of the polarizing layer, including a top regulating area and a bottom regulating area; a top regulating area, which includes a plurality of first particles and a plurality of second particles, wherein the first particles are laid flat on the side of the top regulating area close to the polarizing layer, and the second particles are evenly dispersed on the side of the top regulating area away from the polarizing layer, wherein the average diameter of the first particles is greater than the average diameter of the second particles, and the refractive index is different; and a bottom regulating area, which includes a plurality of microlenses, and the orthographic projection of the center of the microlens in the top regulating area is located within the gap between the first particles. The present application has the effect of alleviating the strong light reflection phenomenon in the relevant display device while improving the problem of brightness reduction.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a polarizer and a display device. Background Art

[0002] As a common display device, liquid crystal displays have been widely used in various electronic products, such as televisions, computer monitors, smart phones, etc. However, in some specific environments, such as strong light exposure or outdoor use, users may encounter obvious light reflection problems, which seriously affects the user's visual experience and display effect.

[0003] In order to solve this problem, some technologies have proposed solutions. These solutions usually involve adjusting the surface structure of the display, adding special coatings or using special materials to reduce the reflection and scattering of light, thereby improving the clarity and visibility of the displayed image. However, although these solutions alleviate the problem of strong light reflection to a certain extent, during the development of improved solutions, people gradually realized that these solutions often bring a certain degree of brightness loss. For example, adding special coatings or materials will cause light loss, which in turn affects the brightness performance of the display and the user's visual experience. Therefore, when optimizing the performance of LCD displays, it is necessary to balance the relationship between anti-strong light reflection and brightness to ensure that users get the best visual experience. Summary of the invention

[0004] In order to alleviate the strong light reflection phenomenon in related display devices and improve the problem of brightness reduction, the present application provides a polarizer and a display device.

[0005] On the one hand, the present application provides a polarizer adopting the following technical solution:

[0006] A polarizer, comprising:

[0007] Polarizing layer;

[0008] A light regulating layer, which is disposed on one side of the polarizing layer and includes a top regulating area and a bottom regulating area;

[0009] a top layer regulating region, the top layer regulating region comprising a plurality of first particles and a plurality of second particles, the first particles being spread on a side of the top layer regulating region close to the polarizing layer, and the second particles being evenly dispersed on a side of the top layer regulating region away from the polarizing layer, wherein an average diameter of the first particles is greater than an average diameter of the second particles, and the refractive indices are different;

[0010] The bottom layer regulation area comprises a plurality of microlenses, and the orthographic projections of the centers of the microlenses on the top layer regulation area are located within the gaps between the first particles.

[0011] By adopting the above technical solution, a light regulation layer is set on one side of the polarizing layer, and the light regulation layer is divided into a top regulation area and a bottom regulation area. In the top regulation area, two refractive areas are formed by evenly distributing the first particles and the second particles with different refractive indices. When the light passes through these two particle layers, according to the interference principle of reflected light, the incident light interferes and destructs on the surface of particles with different refractive indices, thereby effectively reducing the intensity of the reflected light and achieving an anti-glare effect. The microlenses in the bottom regulation area focus the light of the backplane and emit it from the gap of the first particles, so that the light passes through the first particle layer as much as possible, and then uniforms the light in the second particle layer. The second particle acts as a scattering particle, and the final emitted light is more uniform, thereby effectively alleviating the decrease in brightness. The setting of the light regulation layer not only solves the glare problem, but also maintains good brightness, which can effectively improve the visual comfort and viewing experience of the display.

[0012] Optionally, the refractive index of the first particles is greater than the refractive index of the second particles.

[0013] By adopting the above technical solution, since the refractive index of the first particle is greater than the refractive index of the second particle, when the incident light is reflected at the interface between the two particles, an obvious refraction effect will be generated, causing the phase of the reflected light to change and interference destructive to occur, thereby reducing the intensity of the reflected light, helping to reduce glare and improve the quality of the display effect. Setting the refractive index of the first particle to be greater than the refractive index of the second particle helps to achieve more effective glare control. When the light passes through the light regulation layer, due to the higher refractive index of the first particle, the interface between the incident light and the second particle will undergo a greater refraction, making the light more likely to be completely absorbed or refracted in the first particle rather than being reflected back.

[0014] Optionally, the outer surfaces of the first particle and the second particle are wrinkled and are irregular planes.

[0015] By adopting the above technical solution, the outer surfaces of the first and second particles have an irregular plane design with wrinkles, which can increase the scattering of light on the particle surface. When light passes through the irregular plane, it will be scattered multiple times by the tiny structures on the surface, so that the light is more evenly distributed after passing through the regulating layer, reducing reflection and refraction, thereby reducing the generation of glare, which helps to improve the anti-glare effect of the polarizer.

[0016] Optionally, the ratio of the proportion of the first particles in the top-level regulatory area to the proportion of the second particles in the top-level regulatory area is 2:3.

[0017] By adopting the above technical solution and adjusting the proportion of the first and second particles, the optical performance can be optimized. Under this setting, the proportion of the second particles is higher, which can scatter light more effectively, reduce reflectivity and glare, and thus improve the anti-glare effect of the polarizer. The proportion of the first particles is lower, which can still maintain a certain refractive index difference, enhance the interference destructive effect, further reduce reflectivity, and improve optical transparency.

[0018] Optionally, the gaps between the first particles are smaller than the average diameter of the second particles.

[0019] By adopting the above technical solution, the small gaps between the first particles can effectively reduce the gaps through which external light passes, thereby increasing the contact area between the light and the particle surface, helping to make more use of the particle surface for absorption, refraction and scattering, and can enhance the ability to regulate light, further reduce reflection and transmission, and effectively reduce the generation of glare. At the same time, by reducing the gaps between the first particles, the particles can be more evenly distributed and fixed, reducing the gaps and irregularities between the particles, helping to maintain the structural stability of the regulation layer, preventing the particles from moving or agglomerating, and thus ensuring the stability and consistency of the optical performance.

[0020] Optionally, there are cavities in both the first particle and the second particle, forming a hollow structure.

[0021] By adopting the above technical solution, the hollow structure can reduce the actual material amount of the particles, thereby reducing the overall weight of the polarizer, helping to reduce the burden on display components, improving the portability and installation flexibility of the device, and reducing production costs, improving production efficiency and economy. In addition, the hollow structure can form more reflection and refraction interfaces inside the particles, thereby enhancing the optical effect. When light passes through the particles, multiple reflections and refractions occur between the cavity and the surface of the particles, increasing the path length of the light and the interaction between light and matter, which helps to improve the polarization effect and glare control capabilities.

[0022] Optionally, a surface enhancement layer is provided on a side of the light regulating layer away from the polarizing layer.

[0023] By adopting the above technical solution, the surface enhancement layer can increase the surface hardness and wear resistance of the polarizer, effectively protect the light regulation layer from external physical damage, such as scratches, wear, etc., help to extend the service life of the polarizer and improve its durability and stability. In addition, the surface enhancement layer usually has anti-pollution and anti-fingerprint functions, which can reduce the residue of fingerprints and dirt on the surface, keep the surface of the polarizer clean and smooth, and improve user experience and viewing comfort.

[0024] Optionally, a wavy protrusion is provided on a side of the surface enhancement layer away from the light regulating layer.

[0025] By adopting the above technical solution, the wavy protrusions reduce the smoothness of the surface, which can reduce the reflection of light on the surface, increase scattering, and help improve the optical transparency and clarity of the surface enhancement layer, which is conducive to maintaining the high definition and good visual effects of the display. In addition, the wavy protrusions can effectively increase the surface area, so that the surface enhancement layer is in more contact with the surrounding environment, thereby improving the functionality and performance of the surface enhancement layer. This helps to enhance the adsorption performance and stability of the surface enhancement layer, and improve its durability and service life.

[0026] Optionally, a side of the polarizing layer facing away from the light regulating layer is covered by a protective layer.

[0027] By adopting the above technical solution, the protective layer can effectively protect the polarizing layer, which helps to extend the service life of the polarizer and improve its durability and stability. The optical properties of the protective layer can enhance the polarizing effect and further improve the optical performance and display effect of the polarizer. By properly selecting the material and design of the protective layer, the polarizing effect can be optimized and the image quality and color saturation of the display can be enhanced.

[0028] On the other hand, the present application provides a display device that adopts the following technical solution:

[0029] A display device comprises the polarizer mentioned above.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. By setting a light regulation layer on one side of the polarizing layer to form a top regulation area and a bottom regulation area, two kinds of refractive index particles are used to achieve light interference and destructive reflection reduction. At the same time, the microlens focusing in the bottom regulation area and the scattering effect of the second particles effectively alleviate the problem of brightness reduction;

[0032] 2. By limiting the proportion, refractive index, diameter and structure of the first and second particles, the anti-glare effect is further improved, and the user experience and viewing comfort are improved;

[0033] 3. By setting the surface enhancement layer and the protective layer, the light regulation layer and the polarizing layer are effectively protected, the service life of the polarizer is effectively extended, and its durability and stability are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of a polarizer in Example 1 of the present application.

[0035] Figure 2 This is a schematic diagram of non-external direction light in Example 1 of the present application.

[0036] Description of reference numerals:

[0037] 1. Polarizing layer; 2. Light regulating layer; 21. Top regulating area; 22. Bottom regulating area; 23. First particles; 24. Second particles; 25. Microlens; 26. Cavity; 3. Surface enhancement layer; 31. Protrusion; 4. Protective layer. DETAILED DESCRIPTION

[0038] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0039] The embodiment of the present application discloses a polarizer.

[0040] Example 1

[0041] Reference Figure 1 A polarizer, whose structure includes a surface enhancement layer 3, a light regulation layer 2, a polarizing layer 1 and a protective layer 4. In terms of layout, the surface enhancement layer 3, the light regulation layer 2, the polarizing layer 1 and the protective layer 4 are stacked in sequence to ensure the stability and functionality of the overall structure.

[0042] The surface enhancement layer 3 is located at the top, facing the display panel side, and its function is to improve the surface hardness and wear resistance of the polarizer. The surface enhancement layer 3 enables the polarizer to better resist physical damage such as scratches and abrasion from the outside, effectively prolongs its service life, and enhances its durability and stability. In addition, it also has an anti-pollution effect, effectively reduces the residual dirt, and keeps the surface of the polarizer clean.

[0043] The surface of the surface enhancement layer 3 adopts a wavy protrusion 31 structural design, which reduces the smoothness of the surface, effectively reduces the reflection of light on the surface, and then increases the scattering effect of light. By reducing reflection, the optical transparency and clarity of the surface enhancement layer 3 are significantly improved, thereby maintaining the high definition and excellent visual effects of the display. In addition, the wavy protrusion 31 structure can expand the surface area, so that the surface enhancement layer 3 can be more in contact with the surrounding environment. With the increase in contact area, the adsorption performance and stability of the surface enhancement layer 3 are significantly enhanced, thereby extending its service life and durability, and further improving its functionality and performance.

[0044] On the other side of the surface enhancement layer 3, a light regulation layer 2 is provided, which is divided into a top regulation area 21 and a bottom regulation area 22, each of which has a specific function. First, in the top regulation area 21, there is a unique particle distribution structure, in which the first particles 23 and the second particles 24 are evenly distributed in the top regulation area 21, and the distribution is dense and orderly. The first particles 23 are laid on the side away from the surface enhancement layer 3, and the second particles 24 are evenly dispersed on the side close to the surface enhancement layer 3, wherein the average diameter of the first particles 23 is greater than the average diameter of the second particles 24. This layered layout of particles allows light to undergo precise regulation when passing through.

[0045] In the top control area 21, the particle layout structure design evenly distributes the first particles 23 and the second particles 24 with different refractive indices in the upper and lower layers, thus forming two clear refraction areas. When light passes through these two particle layers, according to the principle of light interference, when the incident light interacts with the surface of particles with different refractive indices, interference occurs, so the intensity of the reflected light is effectively reduced, thereby achieving the expected anti-glare effect. This layout not only effectively controls the light during propagation, but also ensures the efficient operation of the optical system, providing users with a clearer and more comfortable visual experience.

[0046] In addition, the first particles 23 have a higher refractive index, while the refractive index of the second particles 24 is relatively low. This difference plays a key role when light passes through the light regulation layer 2: due to the higher refractive index of the first particles 23, the light will undergo obvious refraction when interacting with the interface of the second particles 24, resulting in the light being more likely to be completely absorbed or refracted in the first particles 23 rather than being reflected back, effectively reducing the generation of reflected light, thereby further enhancing the anti-glare effect, allowing the observer to enjoy a clearer and more comfortable visual experience when using the polarizer.

[0047] The outer surfaces of the first particles 23 and the second particles 24 are both designed with wrinkles, which present an irregular rough surface. However, since the first particles 23 and the second particles 24 are generally spherical, these fine wrinkles are not clearly depicted in the figure. Through this irregular plane structure, multiple scattering of light on the surface of the particles is realized. When light passes through these irregular surfaces, the multiple reflections and scattering between it and the tiny structures make the light more evenly distributed on the entire surface of the polarizer. This uniform light distribution greatly reduces the occurrence of glare and greatly improves the anti-glare effect of the polarizer.

[0048] Secondly, in terms of the distribution ratio of the first particles 23 and the second particles 24, the regulation limits the ratio of the first particles 23 in the top regulation area 21, ensuring that the ratio between the first particles 23 and the second particles 24 in this area is 2:3. At this ratio, the proportion of the second particles 24 is relatively high, which enables it to scatter light more effectively, thereby reducing the reflectivity and glare, and significantly improving the anti-glare effect of the polarizer. At the same time, the proportion of the first particles 23 is low, but a certain refractive index difference is still maintained. Not only does it enhance the destructive interference effect and further reduce the reflectivity, it also effectively improves the optical transparency of the polarizer.

[0049] It is worth noting that the gaps between the first particles 23 are set to be smaller than the average diameter of the second particles 24, which gives it a significant advantage in optical performance. First, this tiny gap effectively reduces the gaps through which external light passes, thereby increasing the contact area between the light and the surface of the particles. The light can contact the surface of the particles more fully, so that it can be absorbed, refracted and scattered more effectively, thereby enhancing the ability to control the light. This enhanced control ability allows us to better reduce reflection and transmission, effectively reduce the generation of glare, and significantly improve the anti-glare effect of the polarizer.

[0050] At the same time, by reducing the gaps between the first particles 23, the particles can be more evenly distributed and fixed. This uniform distribution helps to reduce the gaps and irregularities between the particles, which in turn helps to maintain the structural stability of the control layer. In contrast, if the gap is too large, there may be too many gaps between the particles, resulting in uneven optical properties. In addition, small gaps also help prevent particles from moving or aggregating, further ensuring the stability and consistency of optical properties. Therefore, controlling the gaps between the first particles 23 to be smaller than the average diameter of the second particles 24 not only improves the anti-glare effect of the polarizer, but also ensures the stability of its structure and the consistency of its optical properties.

[0051] In addition, in terms of structure, the first particle 23 and the second particle 24 adopt a hollow design, and there is a cavity 26 inside each particle, which can effectively reduce the actual material amount of the particle, thereby reducing the overall weight of the polarizer, helping to reduce the burden of the display component and effectively reducing the production cost. At the same time, when light passes through the particle, multiple reflections and refractions will occur between the cavity 26 and the particle surface. Multiple reflections and refractions increase the path length of the light, which helps to improve the polarization effect and glare control ability.

[0052] refer to Figure 2, the bottom control area 22 includes a plurality of microlenses 25, and the positions of these microlenses 25 correspond to the gaps between the first particles 23. Such a layout not only ensures that the microlenses 25 can make full use of the space, but also maximizes the efficiency of light control. The role of the microlenses 25 is very critical. They can effectively focus and guide the light on the backplane, and emit it from the gaps between the first particles 23, ensuring that the light can pass through the first particle 23 layer as much as possible, avoiding the loss and waste of light, thereby improving the utilization rate of light. Subsequently, when the light passes through the second particle 24 layer, the second particle 24 can disperse and homogenize the light, effectively reducing the unevenness of the light, thereby improving the overall performance of the polarizer. Not only does it alleviate the problem of brightness reduction, but it also optimizes the propagation and utilization of light, making the effect of the polarizer even better, providing users with a clearer and more comfortable visual experience.

[0053] The other side of the light regulation layer 2 is the polarizing layer 1, which is used to realize the basic function of the polarizer, that is, to convert natural light into polarized light. One side of the polarizing layer 1 is covered by the protective layer 4. The setting of the protective layer 4 can effectively protect the polarizing layer 1, reduce the damage to it from external environmental factors, and also help to extend the service life of the polarizer and improve its overall durability and stability.

[0054] The implementation principle of Example 1 is:

[0055] A light regulation layer 2 is set on one side of the polarizing layer 1, and a top regulation area 21 and a bottom regulation area 22 are constructed. The light interference is achieved by using particles of two refractive indices, which effectively reduces reflection. The focusing of the microlens 25 in the bottom regulation area 22 and the scattering effect of the second particles 24 further alleviate the problem of brightness reduction and ensure the uniform output of light. The ratio, refractive index, diameter and structure of the first particles 23 and the second particles 24 are strictly controlled to further improve the anti-glare effect and enhance the user's viewing comfort. At the same time, a surface enhancement layer 3 and a protective layer 4 are set to effectively protect the light regulation layer 2 and the polarizing layer 1, extend the service life of the polarizer, and enhance its overall durability and stability. The comprehensive design not only solves the problems of glare and brightness reduction, but also ensures the long-term reliability and high-quality performance of the product, providing users with a more excellent visual experience and usage experience.

[0056] An embodiment of the present application discloses a display device.

[0057] Example 2

[0058] A display device comprises the above-mentioned polarizing film.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A polarizer, characterized in that ,include: Polarizing layer (1); A light regulation layer (2), the light regulation layer (2) being arranged on one side of the polarizing layer (1), and comprising a top regulation area (21) and a bottom regulation area (22); A top layer regulating region (21), the top layer regulating region (21) comprising a plurality of first particles (23) and a plurality of second particles (24), the first particles (23) being spread on a side of the top layer regulating region (21) close to the polarizing layer (1), and the second particles (24) being evenly dispersed on a side of the top layer regulating region (21) away from the polarizing layer (1), wherein an average diameter of the first particles (23) is greater than an average diameter of the second particles (24), a refractive index of the first particles (23) is greater than a refractive index of the second particles (24), and a gap between the first particles (23) is smaller than an average diameter of the second particles (24); A bottom layer control area (22), the bottom layer control area (22) comprising a plurality of microlenses (25), the orthographic projections of the centers of the microlenses (25) on the top layer control area (21) being located within the gaps between the first particles (23).

2. A polarizer according to claim 1, characterized in that: The outer surfaces of the first particles (23) and the second particles (24) are wrinkled and are irregular planes.

3. The polarizer according to claim 1, characterized in that: The ratio of the proportion of the first particles (23) in the top-level control area (21) to the proportion of the second particles (24) in the top-level control area (21) is 2:

3.

4. The polarizer according to claim 1, characterized in that: Both the first particle (23) and the second particle (24) have cavities (26) therein, forming a hollow structure.

5. The polarizer according to claim 1, characterized in that: A surface enhancement layer (3) is provided on the side of the light regulation layer (2) facing away from the polarizing layer (1).

6. The polarizer according to claim 5, characterized in that: A wavy protrusion (31) is provided on the side of the surface enhancement layer (3) facing away from the light regulation layer (2).

7. The polarizer according to claim 1, characterized in that: The side of the polarizing layer (1) facing away from the light regulating layer (2) is covered by a protective layer (4).

8. A display device, characterized in that: A polarizer comprising the polarizer described in any one of claims 1 to 7.

Images